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Gauge & Instrument Guards

Griffco diaphragm gauge guards and instrument isolators are designed to enhance the performance of chemical feed systems. The addition of gauges to the system ensures optimal pressures are maintained. Diaphragm isolators protect instruments against chemical attack. Also known as diaphragm isolators.

Available Sizes

1/4″, 3/8″, and 1/2″ (NPT, BSPT, Socket, Union, Flange)
Gauge Port Size: 1/4″

No Gauge
0 – 160 psi (Standard)

Economy Gauge
Brass Case w/Brass Connection
0 – 60 psi

Mid-Range Gauge
304 SS Gauge Case w/Brass Connection
0 – 100 psi

Premium Gauge
304 SS Gauge Case w/316 SS Connection
(Glycerin Filled)
0 – 200 psi

PVC (Max Temp: 140°F / 60°C)
CPVC (Max Temp: 190°F / 87°C)
Polypropylene (Max Temp: 190°F / 87°C)
PTFE
PVDF (Max Temp: 300°F / 150°C)
316L SS
Alloy 20

Top
Noryl®

O-Ring

Viton®

Connections

Standard: Viton®
Optional: PTFE, Hypalon®, Kalrez®

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Product
Description
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GG050C0T
Gauge – PTFE Diaphragm
GG050C0TFG5
Gauge – PTFE – Flanged – 1/2″ Gauge Port
GG050C0TG5
Gauge – PTFE – 1/2″ Gauge Port
GGU050K0TD
Connection – PVDF – PTFE – No Gauge
GGPD050PP33EWXL
Gauge – 100 psi – EPDM Diaphragm – 70/30 Glycerin Filled
GGPD050PP36EWXL
Gauge – 30 psi – EPDM Diaphragm – 70/30 Glycerin Filled
GG050PP11
Gauge – 160 psi – Viton – 70/30 Glycerin Filled
GG050PP11T
Gauge – 160 psi – PTFE – 70/30 Glycerin Filled
GG050PP12T
Gauge – 60 psi – PTFE – 70/30 Glycerin Filled
GG050PP14
Gauge – 200 psi – Viton – 70/30 Glycerin Filled
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